What is CVE-2025-68313?

CVE-2025-68313 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10, affecting Linux kernel versions from 6.6.156 onward and patched in 6.12.58, 6.17.8 and 6.18. CVE-2025-68313 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-68313?

CVE-2025-68313 has a CVSS score of 7.1 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

Is there a patch available for CVE-2025-68313?

Yes, CVE-2025-68313 has been patched. Fixed versions include 6.12.58, 6.17.8 and 6.18. If you are running Linux kernel 6.6.156 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-68313 actively exploited?

CVE-2025-68313 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2025-68313

High

In the Linux kernel, the following vulnerability has been resolved: x86/CPU/AMD: Add RDSEED fix for Zen5 There's an issue with RDSEED's 16-bit and 32-bit register output variants on Zen5 which return a random value of 0 "at a rate inconsistent with randomness while incorrectly signaling success (CF=1)". Search the web for AMD-SB-7055 for more detail. Add a fix glue which checks microcode revisions. [ bp: Add microcode revisions checking, rewrite. ]

Package Linux Kernel

Published 2025-12-16

Last modified 2026-09-02

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.1

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Affected versions

Linux kernel versions 6.6.156, 6.8 and later are affected. Fixed in 6.12.58, 6.17.8, 6.18 and their respective stable series.

Affected from

≥ 6.6.156 ≥ 6.8

Fixed in

✓ 6.12.58 6.12.x ✓ 6.17.8 6.17.x ✓ 6.18

References

3 total

Details

CVE ID CVE-2025-68313

Severity High

CVSS score 7.1 / 10

CVSS version 3.1

Published 2025-12-16

Modified 2026-09-02

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2025-68313?

CVE-2025-68313 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10 . It affects Linux kernel versions from 6.6.156 onward and has been patched in 6.12.58, 6.17.8 and 6.18. CVE-2025-68313 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2025-68313?

CVE-2025-68313 has a CVSS score of 7.1 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
Is there a patch available for CVE-2025-68313?

Yes. CVE-2025-68313 has been patched. Fixed versions include 6.12.58, 6.17.8 and 6.18. If you are running Linux kernel 6.6.156 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-68313 actively exploited?

No. CVE-2025-68313 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.